276results about How to "Strong alkaline" patented technology

The invention relates to an ecological diatom ooze decorative wall material, which belongs to the technical field of the research and development of diatom ooze decorative wall materials. The ecological diatom ooze decorative wall material is formed by mixing diatomite, inorganic pigments, calcined zeolite, ethylene vinyl acetate re-dispersible rubber powder, attapulgite powder, tourmaline-loaded nanometer titanium dioxide, polyester fibers, adipic acid dihydrazide and the like. The main functional component of the wall material is the diatomite, and since the diatomite has a porous structure and a heat-insulation and heat-preserving function, the relative humidity of an indoor space can be automatically adjusted to 40 to 70 percent. Anion generated by utilizing the tourmaline-loaded nanometer titanium dioxide has a sterilizing function, so that the harmful gases can be adsorbed and decomposed; the calcined zeolite is used as aggregate and has a porous structure and large specific surface area, and the function for absorbing and releasing the moisture and purifying the air can be improved. The polyester fibers are used as anti-cracking fibers, so that the strength is enhanced, the anti-cracking capacity is improved, and the mildew can be avoided. The calcium perborate is used as a sterilizing agent and is long-acting and toxic-free. By adopting the ecological diatom ooze decorative wall material, the problems of an existing decorative wall material can be solved. A preparation method of the ecological diatom ooze decorative wall material is simple and easy to implement.

The invention discloses a dyeing treatment process for pure cotton fabrics based on pure natural biological preparations, which is designed for solving the technical problems that the environment is seriously harmed in an existing pure cotton fabric dyeing treatment process, and the human health is harmed in an application process. The adopted technical scheme is as follows: the dyeing treatment process comprises the steps of singeing, desizing, boiling-out, bleaching, dyeing, softening treatment and preshrinking treatment, and the key point is that biological preparations, which are respectively a desizing enzyme solution, a boiling-out enzyme solution, glucose oxidase solution and a plant dye, are respectively adopted in the steps of desizing, boiling-out, bleaching and dyeing. The dyeing treatment process has the technical effects that the operation is simple; the pure natural biological preparations almost do not contain any toxic substance, and wastewater produced in the treatment process is less and biodegradable, so that under the premise of keeping the characteristics such as softness, sweat absorption, comfortableness and naturalness and the like of pure cotton fabrics, the harm to the environment is alleviated, and the harm to human body is avoided, and therefore, the process has a zero-pollution environmental friendliness characteristic.

The invention discloses a catalyst for production of methanol by CO2 hydrogenation. The invention is intended to overcome the problems of low CO2 conversion ratio and low methanol selectivity in a CO2 hydrogenation methanol synthesis process and studies a catalyst with Cu, ZnO, ZrO2 and graphene oxide (GO) as main components. The content, calculated in mass ratio, namely GO/Cu-ZnO-ZrO2, is (0.04-0.16)/1, and the catalyst is prepared by adopting a parallel flow coprecipitation method. The preparation process is simple, conditions are easy to control, and repeatability is good. The catalyst disclosed by the invention has the advantages of easily adjustable and variable composition and structure, larger specific surface area, dispersed active components and good catalytic activity. In a CO2 hydrogenation methanol synthesis reaction, the CO2 conversion ratio and methanol selectivity are improved, CO2 emission reduction is achieved, and the catalyst is significant for solving increasingly serious environmental problems.

The invention relates to a kind of Mg-Al hydrotalcite loaded bimetallic nano-catalyst and its preparation method, and relates to application of the catalyst system in oxidation of alcohol into corresponding carbonyl compounds. The catalyst preparation method consists of: 1) preparing an Mg-Al hydrotalcite carrier through a urea decomposition method; 2) loading the precursors of metal Pd and Au on the Mg-Al hydrotalcite surface; and 3) then reducing Pd (II) and Au (III) through NaBH4, thus obtaining the bimetallic nanometer particle catalyst. The catalyst provided in the invention has the advantages of high catalytic activity, good stability, separability, and easy recovery, thus being applicable to alcohol oxidation reactions in aqueous phases.

The invention discloses a residual oil hydrogenation catalyst, comprising a carrier and an active metal component loaded on the carrier, wherein the carrier is a graphited reaming coal material; the specific surface area of the graphited reaming coal material is 200-960m<2>/g, the mean pore size is 10-100nm, the pore volume is 0.3-1.0cm<3>/g, the active metal component comprises one or more of VIII metallic oxides and VIB metal oxides, and the graphited reaming coal material is graphited reaming activated coal or graphited reaming semicoke. The invention also discloses a preparation method of the residual oil hydrogenation catalyst. Firstly, a carbon raw material is graphited and chambered to obtain the required carrier, and then the active component is soaked into the vector to obtain the residual oil hydrogenation catalyst.

A swab tube for use in oral care. The swab tube includes a swab pre-sealed within a tube which is adapted to contain an oral care composition.

The invention discloses a saline alkali soil conditioning agent. The saline alkali soil conditioning agent comprises, by weight, 9 parts of biological charcoal, 45 parts of calcined phosphogypsum, 20parts of honeycomb briquette ash, 7 parts of modified zeolite, 6.5 parts of expanded perlite, 5.5 parts of humic acid powder, 4 parts of citric acid residue, 3 parts of polysilicate aluminum ferric, 3parts of diatomite, 1 part of a calcium activator, 0.4 part of a composite biological inocula, and 5 parts of an organic composite fertilizer. The saline alkali soil conditioning agent is capable ofimproving saline alkali soil physical and chemical properties effectively, improving time is short, and effect is achieved quickly.

The invention relates to a desulfurizer of organic sulfur (such as carbonyl sulfide, thiol, disulphide and the like) for removing hydrocarbon, in particular for removing hydrocarbon with less than six carbon atoms; the desulfurizer comprises gamma-Al2O3 modified by silicon dioxide, which is used as a carrier and alkali metal oxide used as an active constituent. The desulfurizer has the advantages of high precision for removing organic sulfur, simple preparation process and low cost, and the organic sulfur can be transferred to carbonyl sulfide with above 95% of conversion rate.

The invention discloses an artificial graphite crucible and a preparation method thereof. The artificial graphite crucible is prepared from main raw materials in percentage by weight as follows: 45%-65% of coke, 15%-25% of artificial graphite powder and 20%-30% of high-temperature modified pitch. Firstly, the prepared coke and artificial graphite powder are crushed, and the high-temperature modified pitch is molten into a liquid; the treated raw materials are uniformly mixed and kneaded, and paste is obtained; the paste is cooled and formed, and a raw graphite crucible product is obtained; theraw graphite crucible product is sent to an annular roaster with a cover to be roasted, and a primary roasted product is obtained; the primary roasted product is sent to a high-pressure impregnationtank for pressurized impregnation, and a graphite crucible impregnated product is obtained; the impregnated product is sent to an underbody roaster to be roasted, and a secondary roasted product is obtained; the secondary roasted product is sent to a graphitization furnace for graphitization, and a graphite crucible graphitized product is obtained; finally, conventional machining is performed andthe artificial graphite crucible product is obtained. The prepared artificial graphite crucible has high capacity and good use performance.

The invention discloses a high-performance cross-linked anion membrane and a preparation method thereof. The anion membrane is prepared from polymer containing benzyl halide perssad by means of biguanide or multi-guanidine cross-linking. The membrane can be applied to fuel batteries or energy storage batteries containing acid electrolyte flow. The membrane is compact in structure, low in deformation and moisture content and fine in ion selectivity, and is fine in thermal stability and anti-oxidation stability due to more dispersive distribution of positive charges. In addition, diffusion of vanadium ions in a full-vanadium-flow energy storage battery can be effectively blocked by high alkalinity of the biguanide or multi-guanidine inter-linked anion membrane, simultaneously, swelling can be inhibited by the inter-linked property, diffusion of the vanadium ions further can be inhibited, coulombic efficiency of the battery is increased to reach 99% at least, and high stability, high conductivity and low swelling are realized.

The invention discloses a method for reducing the chemical oxygen demand of zeolite molecular sieve production wastewater by one-step illumination technique. The method is characterized in that hydrogen peroxide is added into zeolite molecular sieve production wastewater to generate hydroxyl free radicals with superstrong oxidizing ability under ultraviolet irradiation so as to conduct oxidative degradation on the organic nitrogen-containing compound in the zeolite molecular sieve production wastewater, and the organic nitrogen-containing compound is one or more of a quaternary ammonium salt, quaternary ammonium base, and organic amine. Compared with traditional methods, the method provided by the invention simplifies the treatment process, saves the treatment time, and is easy to operate. For wastewater containing quaternary amine base and organic amine, the method provided by the invention can directly treat the wastewater without adding acid to conduct neutralization, and the treated water sample is close to neutral.

The invention discloses a method for preparing a brominated-polyphenylene-ether-guanidination-based homogeneous anion exchange membrane. The method is characterized by comprising the following steps of: dissolving bromomethylated poly(2,6-dimethyl 1,4-phenylene oxide), namely brominated polyphenylene ether of which the degree of methyl bromination is 5 to 100 percent into an organic solvent, adding organic micromolecules 1,1,2,3,3-pentamethyl substituent carbamidine in a molar weight which is 0.5 to 10 times that of bromine methyl groups contained in the brominated polyphenylene ether, stirring the solution at the temperature of between 0 and 100 DEG C, reacting for 6 to 48 hours, directly coating casting film solution on the matrix or coating the casting film on reinforced fabrics, and removing the solvent to obtain the anion exchange membrane. In the method, the properties of the anion exchange membrane are controlled by controlling the degree of substitution of the bromine methyl groups of the brominated polyphenylene, so that the homogeneous anion exchange membrane having the advantages of proper water content, high ion exchange content, high thermal stability and mechanical strength and excellent OH-conductivity and alkali resistance can be selected.

The invention relates to mineral admixture concrete and a preparation method thereof and belongs to the field of building materials. The preparation method is characterized in that a composite solid exciting agent is utilized to excite potential activity of a mineral admixture and produces a synergistic effect with common cement so that the mineral admixture concrete having strength of C30-C70 and excellent durability such as anti-permeability and frost-resistance and allowing normal setting time is obtained. The composite solid exciting agent can greatly improve the strength and the durability of the mineral admixture concrete. Through replacement of 90 to 95% of cement with a large amount of an industrial waste residue-slag powder-fly ash admixture, a production cost is reduced obviously. The mineral admixture of a cementing agent, a sand aggregate and the composite solid exciting agent is pre-stirred and then is added with mixing water so that the composite solid exciting agent is dispersed uniformly and after addition of the mixing water, the mineral admixture can be fully excited. In construction, the mineral admixture concrete has good workability and no ropiness, can be operated easily, has high strength after setting and hardening, good durability and a low cost, and can be used in various engineering construction and concrete products.